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家 在线测试 CES Dry cargo Deck Support Test online CES 5.1 for Deck department, Support level, Dry cargo vessel
在线测试： Test online CES 5.1 for Deck department, Support level, Dry cargo vessel
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问题 1 从 90
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What is the MARPOL definition of a "solidifying substance"?
A noxious liquid substance which, in the case of a substance with a melting point of less than 20°C which is at a temperature of less than 10°C above its melting point at the time of unloading, or in the case of a substance with a melting point equal to or greater than 20°C, is at a temperature of less than 15°C above its melting point at the time of unloading.
A noxious liquid which will crystallise and eventually bond into solid form at ambient, or less than ambient temperatures unless an external heat source is applied.
A noxious liquid substance which, in the case of a substance with a melting point of less than 15°C which is at a temperature of less than 5°C above its melting point at the time of unloading, or in the case of a substance with a melting point equal to or greater than 15°C which is at a temperature of less than 10°C above its melting point at the time of unloading.
A noxious liquid substance which will cystallise and eventually bond into solid form if exposed to an external heat source.
You want to stop your ship as quickly as possible without too much change in the heading. What can you do to achieve this?
Use the rudder hard over both sides while reducing engine power, so-called "high frequency rudder cycling"
Do a zig zag manoeuvre
Put the engine full astern
Make a complete turning circle
Which of the following answers would best define the term "risk"?
Risk is the possibility that a dangerous situation is likely to occur
Risk means something more dangerous than normal is likely to occur
Risk is a situation involving exposure to danger and includes both identification of the occurrence and the likelihood that it will happen.
Risk is the term to identify a dangerous situation which will affect the ship
What should each manufacturer of cargo tank coatings issue ?
A information guide stating type, when and how many microns of coating applied.
A resistance guide stating which chemicals are compatible with the coating.
A information guide stating how many microns of coating applied.
A resistance guide stating which poisonous vapours are compatible with the coating.
Diodes are widely used in rectification, or the conversion of alternating current to direct current. The sinusoidal input voltage V(in) is applied to the circuit shown. Which of the output voltages is correct ?
Figure 1
Figure 4
Figure 3
Figure 2
Normally ventilation fans in enclosed ro-ro spaces must be run continuously whenever vehicles are on board, why?
It is easier for the crew, they don't have to think about starting and stopping of fans
The manufacturer of the fans recommends continuous operation to reduce maintenance cost
An increased number of air changes may be required when vehicles are being loaded or unloaded, or where flammable gases or liquids are stowed in closed ro-ro spaces
It is better to run the fans continuously instead of testing the atmosphere
Feed check valves for main and auxilliary purposes are normally of the double shut off type, as shown in the diagram. What is the main function of the non-return valve?
To allow overhaul of the screw down valve when the non-return valve is shut and the boiler is steaming.
To allow fine tuning of feed water flow to the boiler.
To prevent the steam and water in the boiler from discharging out by the feed line, if a feed line fracture or a joint in the line blows.
To increase the workload for staff when overhauling the boiler.
LNG carriers are fitted with a deck water spray system? In addition to providing protection against fire and protection for the crew and cooling in the event of a fire in the cargo area, what is the other main purpose of having this system?
To heat the cargo area in case of a cargo spill incident.
To make it easier for the crew to keep the decks clean.
To extinguish fires inside the cargo tanks.
To flush cargo spill overboard and protect crew in case of a cargo spill incident.
What is the correct name of the part highlighted in the sketch?
Push rod
Piston rod
Crankshaft
Connecting rod
Why should iron ore not be dropped from a great height into a cargo hold of a Bulk Carrier?
Because the shell plating can indirectly become damaged
Because cracks can develop around the hatch coamings
Because the tank top and double bottom internals can sustain damages
In order to maintain the ships stresses within acceptable levels
When is a vessel deemed to be cargo worthy?
When the hatch covers and/or hatch pontoons are weather tight
When the vessel’s Safety Construction Certificate is valid
When the hatch covers and/or hatch pontoons are watertight
When all her certificates are in order
What is the necessary protection when you are rust chipping with air tools?
Gloggles and ear protectors
Protective clothing, safety shoes, earmuffs
Gloves, goggles, earmuffs
Protective clothing, safety shoes, gloves, goggles, earmuffs.
The speed of ship's generator is regulated by the governor. A 10% reduction in generator speed occurs due to a faulty governor. The likely consequence for all motors powered from this generator is to:
Increase motor speed by about 10%
Reduce motor volt drop by about 10%
Increase motor power by about 10%
Reduce motor speed by about 10%
Why did they order another tug?
Because the bow thrust was useless in the strong wind.
Because they wanted to make sure that the ship could be safely turned.
Because the mates always receive their instructions prior to berthing and they all felt that another tug was needed.
Because the ship was going to berth with port side to the terminal.
Which of the tools given in the options would be best suited for cutting a piece of angle iron?
Hacksaw.
Tenon saw.
Crosscut saw.
Rip saw.
On a container vessel, with regard to the carriage of Calcium Hypochlorite what is not allowed under the IMDG Code?
Cargo transport units to be carried under deck
Calcium Hypochlorite packed and shipped in Intermediate Bulk Containers (IBCs)
Calcium Hypochlorite packed and shipped in bags
Packaging group II
Training manuals for Life Saving Appliances and Fire Fighting systems and equipment shall be provided in crew mess room, recreation room or in each crew cabin. The training manuals shall explain the following in detail:
General Emergency procedures
Emergency procedures including alarm signals, general instructions and safety practice onboard, specific information on equipment, operation of equipment
Alarm signals and donning of lifjackets
Manufacturer's specific information on equipment including maintenance procedures, operation of equipment
What is the main purpose of the reliquefaction plant fitted to many liquefied gas carriers?
It is used to change the cargo vapour back to liquid keep the cargo cooled.
It is used to discharge the cargo when the cargo pumps don't work.
It is used to cool down the cargo tanks before loading.
It is used to change the liquid cargo to vapour to heat the cargo if it is too cold.
What is the correct definition of "gangway"?
Portable bridge between ship and shore.
A way to handle gangs.
A gangway to the waterline.
The way between two gangs.
What is essential with liquefied gas fires
To isolate the fuel source before extinguishing the flames on a gas fire
To cool down the surroundings and extinguish the fire
To immediately start extinguish the flames with water
To evacuate the area
In a PID controller it is possibile to change the setting of the Proportional band (P), the Reset time (I) and the Rate time (D). Please indicate which curve shows the typical response to a step input, if the variables are well adjusted.
Figure 4.
Figure 3.
Figure 2.
Figure 1.
When cross-flooding arrangements to correct unsymmetrical flooding and excessive heel angels in damaged condition are installed in passenger ships, what is the maximum angle of heel after flooding but before equalization?
15 degrees
10 degrees
20 degrees
30 degrees
After washing with fresh water how would you know whether salt remains in the cargo holds of a Bulk Carrier?
By carrying out a visual inspection of the cargo holds
By carrying out silver nitrate tests which should turn milky in the presence of chlorides
Using silver nitrate which should remain colourless in the presence of salt
By appointing a surveyor to inspect the cargo holds
If normal cool down rate has been complied with, what should the temperature at the primary insulation and the secondary barrier be?
-120C and -100C.
-100C and -80C.
-130C and -120C.
-140C and -130C.
How often shall the master review the safety management system?
Every month
Bi-annually
Every 5 years
Annually
On the figure 4 possible definitions of the term "ASTERN" are shown. Which one is the correct one?
Astern is defined as C on the figure
Astern is defined as D on the figure
Astern is defined as A on the figure
Astern is defined as B on the figure
What is the best method to use to remove heavy scale and fouling from the plates of a heat exchanger?
Use wire-brush, metal scrapers and chipping guns.
Renew the plates.
Use high-pressure cleaner with abrasive additives.
Soak the plates in a recommended cleaning solution and then use a soft brush or pressure cleaner.
What is the minimum furnace temperature that must be reached during start up before waste material can be introduced into an incinerator?
1500 C
850 C
2500 C
2000 C
As well as hazards due to flammability, toxicity and frostbite some liquefied gas cargoes may cause chemical burns in the event of skin contact? Which of the commonly carried cargoes given in the options is most likely to result in chemical burns due to skin contact?
Propane.
Butane.
Ethylene.
Ammonia.
What is a low location lighting system?
A light system powered by battery or fluorescent signs mounted at deck level indicating the way to the nearest exit
A system displaying the escape route from all cabins by light points in the ceiling, powered by battery
An illumination system for all corridors in cabin areas
An emergency illumination system that illuminates all deck areas to a minimum
What is the main purpose of routine testing of cooling water?
To ensure that the proper residuals of treatment chemicals, as specified, are maintained at all times
To detect dissolved oxygen in the water
To measure the pH - value of the water
To detect presence of contaminants in the water
On a RoRo vessel, what additional securing arrangements should be used when loading a vehicle on an incline or fixed Ramp
Double the normal lashings should be used
None
The Vehicle should also be chocked under its wheels
When carrying high sulphur coal which areas of a cargo hold are prone to corrosion?
Steelwork with which dry cargo is in contact
Air and sounding pipes passing through the hold
Steelwork with which wet cargo is in contact
All steelwork
The majority of conversions adopted under the auspices of IMO fall into which of the three main categories:
don't know
Maritime Safety, Prevention of Marine pollution, Liability and compensation
Maritime Safety, STCW, Maritime Security
Safety, Terrorism, ILO
Which of the following type of crude oil requires special consideration in terms of carriage and cleaning?
Medium Crude.
Paraffinic Crude.
Reconstituted Crude.
Sweet Crude.
Which of the given options can be considered to be the most important physical property of a liquefied gas?
Its unsaturated vapour density.
Its saturated vapour pressure/temperature relationship.
Its latent heat.
Its molecular structure.
On a container vessel, when would a bulk liquid cargo carried in a flexitank container be considered dangerous?
When the associated material safety data sheet shows a constituent(s) listed in the IMDG Code
When declared as a non-hazardous chemical
When the shipper instructs that the container be carried on-deck only
When declared as bulk liquid foodstuff
What is the symbol for a THYRISTOR?
Figure 4.
Figure 3:
Figure 1.
Figure 2.
In discussing segregation, the IMDG Code defines what it means by the term "separated from". Which of the following is that definition?
Either in a vertical or horizontal separation: if the intervening decks are not resistant to fire and liquid, then only in a longitudinal separation is acceptable. For "on deck" stowage, this means a distance of at least 12 metres. This distance also applies to one package stowed "on deck" and another in an upper compartment.
With an intervening compartment, being both a vertical and horizontal separation. Provided an intervening deck is resistant to liquid and fire, a vertical separation of 6 metres is acceptable. For "on deck" stowage, this segregation means a distance of at least 12 metres irrespective of compartment divisions.
Effectively segregated so that the incompatible goods cannot interact dangerously in the event of an accident, but may be transported in the same compartment or hold or on deck, provided a horizontal separation, projected vertically, of 3 metres is obtained.
In different compartments or holds when stowed "under deck". Provided an intervening deck is resistent to fire and liquid, a vertical separation may be accepted as equivalent. For "on deck" stowage, this segregation means a distance of at least 6 metres.
During maintenance work on a compensated mechanical hydraulic governor air is drawn in to the hydraulic circuit after draining and flushing out the unit. Which of the actions given in the options is most likely to assist in the removal of the air from the system?
With the governor in operation open the compensation needle valve to introduce instability and disturb the engine load to make the governor hunt.
With the governor in operation close the compensation needle valve and disturb the load to make the engine hunt.
Overfill the governor with fresh oil to force all of the air out.
Drain the governor again and slowly refill with fresh oil.
Perishable cargo is usually stowed on wooden pallets. The pallets are designed for either two-way or four-way fork lift entry. From the point of view of use on a refrigerated vessel, choose the option which highlights the most important difference between these two types of pallet.
The four-way pallet uses less material.
The two-way pallet is more robust.
The two way pallet is easier to construct.
It does not matter which way around the four-way pallet is stowed.
Some process control systems may several inputs and controlled variables. In this context what is meant by split-range?
On-Off control
Several controllers are connected to the same control-valve
Several control-valves are connected to the same controller
Several control-loops for the same range
When is it necessary to seal a CO2 injection line into the designated ballast hold?
When testing the CO2 system
Prior to ballasting the hold
When carrying non-inflammable cargoes
When handling cargoes that emit dust
When conducting a risk assessment for a shipboard work activity, what are the two elements to be considered?
The chance of an incident re-occuring and the potential effects of an loss.
The available manpower and their experience in this type of work.
The potential severity of harm and the likelihood that harm will occur.
The time available to complete the task and the resources to hand.
This resistor has the value of 68 k ohm. Which colour code should be marked on the rings (assume ring d is the tolerance ring)?
a. red b. black c. yellow
a. blue b. grey c. orange
a. black b. red c. orange
a. violet b. green c. yellow
Which alternative is correct for measuring current over the load L?
Figure 2.
Figure 1.
Figure 4.
Figure 3.
What is the absolute maximum size for a cargo tanks on oil tankers?
Maximum 40,000 cubic metres.
Maximum 35,000 cubic metres.
Maximum 20,000 cubic metres.
Maximum 30,000 cubic metres.
Which of the following statements is correct with regard to IMDG Class 4 (flammable solids) cargoes loaded on a General Cargo vessel?
The cargo is not covered by the requirements of the IMDG Code
The goods can only be carried in the forward part of the vessel
The cargo can be stowed anywhere on the vessel
The goods require protection against movement and can only be loaded if a cargo declaration is supplied by the shipper
A General Cargo vessel has 50 tonne SWL heavy lift derrick; a load of 48 tonnes is to be loaded ;the lifting gear of slings and spreader bar weighs 4 tonnes ; which of the following statements is correct?
The load cannot be loaded because the combined weight of the load and the lifting gear must at least 10% less than the SWL of the derrick
The load cannot be loaded because the combined weight of the load and the lifting gear will exceed the SWL by two tonnes
The load can be loaded because the load itself is less than the SWL of the derrick
The load can be loaded because the SWL can sometimes be exceeded by small amounts in cargo operations
What arrangement may be installed in passenger ships to reduce unsymmetrical flooding in damaged condition?
Self acting ballast trimming arrangement
Cross flooding arrangement
Separate trim tanks
Ballast trimming system
Where on board a ship will cargoes experience the least accelerations?
At the intersection of the fore and aft, athwartships and vertical axes of the ship
At the intersection of the fore and aft and vertical axes of the ship
At the intersection of the athwartships and vertical axes of the ship
At the intersection of the fore and aft and athwartships axes of the ship
How should steel wire rod coils be stowed?
With their cores aligned athwartships
With their cores aligned vertically
With their cores aligned fore and aft
With their cores aligned alternately fore and aft and athwartships
On a RoRo vessel, what is a low-bed Ro-Ro unit that is towed onto a ship called?
Mafi Trailer
Trailer
Flatrack
Flatbed
What distinguishes vapour connections (headers) from liquid cargo connections on a ship's manifold?
Liquid and cargo connections actually appear the same, but the ship's personnel always attach a small board to the applicable flange, identifying the cargo to be loaded and indicating whether it is for the liquid or vapour hose.
Vapour connections are painted yellow with green end bands, are marked with the words "not for liquid" and have a small hole capable of receiving a stud on the flange face at the six o'clock position.
Liquid connections are always marked with the corresponding tank number, while vapour connections are marked with the letter "V".
Vapour connections are painted yellow with red end bands, are marked with the word "vapour" (or "vapor") and have a small stud located on the flange face at the twelve o'clock position.
On a reefer vessel air is passed over the cooling coils before entering the cargo hatch via trunking to cool the cargo. It is important to ensure that the cooling coils are clear of any material such as plastic sheeting or bags. Why is this so important?
The plastic material may block scuppers and bilges.
The plastic sheeting may be picked up by and foul the cooling fans.
The plastic may interfere with the air flow over the cooling coils and subsequently the cooling of the cargo.
The plastic material may affect condensation forming on the cooling coils.
Found in a commonly-used piece of equipment aboard an oil tanker, what does a "pellistor" do?
It is the common term applied to the metal, ceramic or other heat-resisting material which can cool even an intense flame below the temperature required for ignition, as utilised in a flame arrester
It is the reactive element in an oil / water interface detector
It is an electrical sensor unit fitted in a flammable gas detector for measuring hydrocarbon vapours and air mixtures to determine whether the mixture is within the flammable range
It is the electrical sensor which detects low pressure in an Inert Gas generating control system
The insulation resistance (IR) to earth of a new galley hot-plate is measured to be 30 Mohm. When three identical hot-plates are tested together their combined IR will be:
90 Mohm
10 Mohm
30 Mohm
3 Mohm
What is an analogue signal?
A measure of voltage using an oscilloscope.
A stable electric signal.
A continually variable electric signal.
A measure of electric current.
Which of these weapons are widely available and commonly used by criminals and terrorists to further their aims?
Liquid explosive
Gun
Vehicle borne device
Incendiary device
With a bulk ship in port, when would it be permissible to start painting over-side?
Within two hours of berthing
After obtaining permission from the port authority
Immediately after berthing
After obtaining permission from the master
During inspection of a high pressure fuel pump for a medium speed diesel engine it is observed that the upper leading edge and the lower helical edge of the pump plunger have suffered from erosion damage. Select the correct action to take to remedy this from the options given.
Replace the complete pump with a new or reconditioned spare.
Renew the plunger and barrel insert as a pair.
Smooth away the damaged area with a grinder and polishing stone and refit it.
Renew only the plunger if the barrel appears undamaged.
It is common practice to connect a resistor is connected over an alarm contact (see diagram) in many applications. Why is this connection used?
To stabilise power consumption.
To avoid sparks on the contacts when opening and closing.
Enable measuring the total resistance of the circuit.
To monitor the cable/wires for break.
What is the maximum design working pressure for an Independent Type A cargo tank as may be used for the cargo containment system of a fully refrigerated LPG/Ammonia carrier?
Atmospheric pressure.
18 bar gauge pressure.
0.7 bar gauge pressure.
2 bar gauge pressure.
What is the meaning of "Make Fast"?
Make Fast means to secure a rope
Make Fast means to avoid all meals
Make Fast means to coil a rope
Make Fast means to act very quickly
Anyone who without valid reason places, removes, changes or conceals nationality marks or registration marks of a registered ship shall be liable to???
Imprisonment for a term not exceeding 6 months.
Fines or imprisonment for a term not exceeding 12 months.
Fines or imprisonment for a term not exceeding 6 months.
Fines.
Normally, a vessel sails in salt water and therefore salt water draughts are those which are referred to. If there is a change in density however, this must be taken into account because the true draughts of the ship will change. Which of the definitions below is that of this "Fresh Water Allowance"?
The number of millimetres by which a vessel's True Mean Draught changes when she passes from salt water into a dock of a different water density.
The number of millimetres by which a vessel's True Mean Draught changes when she passes from salt water to fresh water, or vica versa.
The allowance assigned by the Classification Society when the vessel is built, to indicate the compensation that may be applied during topping off to allow for dock water density.
The number of centimetres by which a vessel's maximum draught is calculated to increase when she passes from salt water to fresh water.
On a General Cargo Vessel, what must be ensured when using ship's cargo gear in hot climates?
That the cargo gear register in up to date
That stevedores handle cargo gear in the proper manner
That all cargo gear is appropriately marked
That grease from wire falls does not fall onto cargoes being loaded or discharged
A vessel is scheduled to enter a SECA during a forthcoming voyage? What additional considerations must a Chief Engineer take into account when planning for this voyage?
That all garbage is fully disposed of prior to entry into the SECA and suitable arrangements are made for retention while in the SECA.
That there is sufficient room in the bilge holding tank to ensure no discharges of machinery space bilges takes place while the vessel is in the SECA.
That the incinerator is shut down for the duration of the time the vessel is in the SECA.
The availability of low sulphur fuel and the change over time required to ensure the system is clear of normal fuel prior to entry into the SECA.
Why do we use nickel-alloyed steel, stainless steel or aluminium in cargo tank construction on gas carriers designed for LNG and LEG?
Because these metals have a very low thermal expantion coefficient and do not burst of extreme low temperatures
Because these metals cost less than other metal
Because these metals have a high thermal expansion coefficient and do not burst of extream low temperatures
Because the weight on this metals are not so high than other metals
An accumulation test may be necessary for a steam boiler following repairs or modifications. Which of the given options does the accumulation test check?
The capacity of the safety valve to relieve pressure.
The time taken to fill the boiler with water under steaming conditions.
The rate at which the boiler can generate steam.
The time taken for the boiler to reach operating pressure.
When should additional lashings on general cargoes be considered?
When heavy weather is anticipated for the planned voyage
When passing through the Tropical Zone in winter months
When passing through the Summer Zone in winter months
With the onset of heavy weather
From the options given, select the one which controls the effective delivery stroke of a helix type fuel pump for a diesel engine to increase or decrease the quantity of fuel delivered.
The booster pump
The fuel injector
The fuel master control valve
The governor
The coil of a 12V, 120mA dc relay must be connected across a 24V supply. What action should be taken?
Install a 100 ohm resistor in series with the coil
Install a 100 k ohm resistor in parallel with the coil
Install a 100 k ohm resistor in series with the coil
Install a 100 ohm resistor in parallel with the coil
A number of standard 20 foot containers are to be loaded on the deck of a General Cargo ship by No 3 hatch; what are the main checks to be made ?
Containers weight recorded and secured with chains
Containers stowed with doors forward, customs and security seals checked intact
Containers stowed with doors aft, customs and security seals checked intact and clear access to lashings
Containers stowed with doors forward, customs and security seals checked intact; access to lashings unimportant
What is the name by which the regulations which prevent and control pollution from ships are known?
The International Shipping Pollution Laws.
SOLAS
MARPOL
The ISP Code.
What is the disadvantage of using High Tensile Steel (HTS) in ship construction?
Failure without warning
Enhanced vibration in HTS areas
Low elasticity
Diminished cargo carrying capacity
What does this flag mean?
My vessel is stopped and making no way through the water.
Yes (affirmative).
I wish to communicate with you.
I have a diver down; keep well clear at slow speed.
A refrigerated break-bulk cargo (not palletised) is being loaded into a space that it will not fill. From the options given select the one which gives the best way to finish the stow.
With a vertical face that can be secured by netting.
The stow should be stepped down progressively over several rows so that it is self securing.
With a vertical face that can be secured by plywood sheeting.
With a vertical face which can be secured with wooden tomming.
You have just started to load Dicyclopentadiene to 5 port and starboard cargo tanks, but no cargo seems to be coming into the tanks. What will you do?
Carefully slack the bolts back on the connections, working initially on the off-shore mainifold, to determine how far the pressure extends in the ship's pipeline system, to identify which valve is giving the problem.
Stop cargo - notify the Duty Officer and / or the terminal dependng on the agreed communication procedure. Re-check the lines, valves and connections carefully, bearing in mind that there might be a build-up of pressure. Report as appropriate.
Open the main lid on the tank and use a flashlight to try and see if there is a problem with the pump or line inside.
Say nothing. Re-check all valves. Just open it, if one is found closed.
A small consignment of dangerous goods is to be loaded on deck of a General Cargo ship; choose from the following stowage position which is the most suitable ?
The aft end of No 2 Hold
The forward end on No 2 hold
The aft end of No. 4 hold
On top on No 1 hold
After discharge of a cargo of bananas there are a lot of cartons of condemned fruit on the deck. The vessel is not in a special area and is more than 100 miles from land. Select from the given options the best way to dispose of the condemned fruit.
Remove and retain all of the packaging including any inner plastic bags and dispose of the condemned fruit overboard.
Keep the cargo onboard until the vessel enters a port with suitable disposal facilities.
Dispose of the complete cartons of condemned fruit overboard and make an entry into the Garbage Disposal Log.
Keep the fruit for crew consumption and dispose of the packaging.
On a Container vessel, what is the function of a raised deck socket?
To house base twistlocks or stacking cones
To house stacking cones
To secure turnbuckles
To house base twistlocks
In which cases shall side scuttles in passenger ships be so constructed that they cannot be opened without the consent of the master of the ship?
Where the height of the side scuttles go through more than two decks
Where the sills of the side scuttles are below the margin line
Where the sills of the side scuttles are less than 500 mm above the deepest load line
Where the sills are mounted below the bulkhead deck
Where is the "FORECASTLE", in the figure?
The Forecastle is D, in the figure
The Forecastle is B, in the figure
The Forecastle is C, in the figure
The Forecastle is A, in the figure
What is the most suitable type of packing for a shaft gland of a pump used for seawater duties?
Greasy cotton packing.
Mica impregnated cotton packing.
PTFE rope packing.
Lead covered hemp packing.
Why must inert gas from a combustion-type generator never be used when preparing cargo tanks for ammonia?
Because of the high oxygen content in inert gas.
Because ammonia reacts with the carbon dioxide in inert gas.
Because of the high water content in inert gas.
Because of the high temperature in inert gas.
Why do we have to make sure that the plate pack is compressed to the right measurement A, after insertion of plates?
This is not important.
Should be compressed more every time after opening.
To avoid leakages.
To prevent serious damages to the plates.
When a bulwark ladder is used for the pilot to step down onto the deck, such ladder shall have two stanchions provided, which are at least 40 mm in dia, between 70 and 80 cms apart, and at least 1.2 mtrs higher than the bulwark. Such stanchions shall be rigidly secured:
At the deck level.
At the deck level and near the bulwark top level.
At or near the bulwark top level.
It does not matter where they are secured.
To maintain a fire, three conditions need to be met: Oxygen, combustible material and sufficient temperature for combustion. What subject must be removed to extinguish the fire?
Oxygen.
Either of the mentioned alternatives.
Combustible material.
Heat, Oxygen and combustible material.
How many 'thermal protective aids' are required to be carried on vessels with open lifeboats?
10 in each lifeboat
Each lifeboat should carry the same number of thermal protective aids as the number of persons it is designed to carry
One for each person on board who is not provided with an immersion suit
They are not required, providing the boat has a canvas canopy which can be rigged in cold weather
该在线测试包含来自 CES 5.1 测试的 90 道随机问题，涉及您选择的主题。